Philips Philips-TVHD-Chasis-L05HD free download

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PHILIPS TECHNICAL TRAINING L05HD TRAINING MANUAL PHILIPS CONSUMER ELECTRONICS 64 PERIMETER CENTER EAST PO BOX 467300 ATLANTA, GA 31146-7300 MM032205 TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 AUXILIARY POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 MAIN POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 DEFLECTION SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 TV SIGNAL PROCESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 DEFLECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 VIDEO SIGNAL FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 CRT DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 AUDIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 SIDE JACK PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 TROUBLESHOOTING TO PANEL LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Introduction The L05HD TV chassis is designed for the model year 2005. This set is High Definition ready with an NTSC tuning system. To receive the ATSC channels a set top box is required. This design is used in large screen sizes of 27 and 30 inch with the 27-inch having a 4:3 aspect ration and the 30 inch version having a 16:9 aspect ratio. There are three types of CRTs used which are the 100 degrees, 110 degrees, and wide screen version. The standard architecture consists of a Main panel (called the family board), a Picture Tube panel, a Side I/O panel, a HDMI panel, a HD panel, and a Top Control panel. The panels consists primarily of conventional components with some surface mounted devices. The functions for 1fH video and audio processing is performed in one IC (TDA1200xx, IC 7200), the Hercules chip. This chip is located on the solder side of the main panel. The functions for the HD signals and 1fH to 2fH conversion is performed on the HD panel. Except for switching, OSD, Closed Caption, Text, and A/D conversion, the bulk of the pro- cessing is performed by the Trident chip, IC 7201. The L05HD chassis has two signal processing sections, one for the 1fH (NTSC), and one for 2fH (HD) processing. Whatever signal is applied to the set, it is displayed on the CRT in a 1080i format. The NTSC tuning system features 181 channels with on-screen display. The main tuning